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I have used both the Maxima and 240SX rear calipers on my Z cars. The problem is that the bleeders do not point straight up such that air remains trapped in the cylinder. Wasted lots of time and fluid. Remove caliper with flex line connected method: You can remove the caliper while leaving the flex line connected. Block the piston so it can not move otherwise when you pump the brakes you will just blow the piston out of the cylinder and you will be very very sad. Hold the caliper so the bleeder points up and shake the caliper while your accomplice pumps the brakes. Repeat. Repeat etc. Speed bleeders (type with spring and plug inside or check ball inside) make this job easier. Bench bleed caliper method: You can try what I came up with this week: bench bleed the calipers before installing them. While prepping the new calipers I noticed my MC bench bleeding kit on the bench. The fittings used for the MC will also fit the caliper. I used the fittings/hoses from my MC bench bleeding kit (O'reilley's) plus a huge syringe I found at a grocery store. Connect the syringe with hose to the speed bleeder. Screw in a plastic push-on hose fitting (from a bench bleeding kit) into the inlet of the caliper with a hose to a bottle to catch the fluid. Push fluid into the caliper with the syringe being careful not to push any bubbles in the hose into the caliper. Once the caliper is full, and no bubbles are seen, close the speed bleeder and plug the inlet with a M10 x 1.0 bolt. I was amazed at how much air flowed out of the caliper. It took about three full syringes of fluid to get all of the fine bubbles out. After installing the calipers (see procedure below), and doing one side at a time, it only took three pumps to get a firm pedal for each caliper. Steps: Bench bleed calipers being sure to tighten the speed bleeder and install a M10x1.0 bolt in the caliper inlet when done to keep the caliper sealed. Fill MC reservoir with fluid. Push brake pedal with your hand and block it in place with a stick between the seat and the pedal. This blocks the fluid return port in the MC so fluid will not flow out of the MC. Remove old caliper leaving the flex line attached and hang it from the spring with some wire. This keeps the brake line sealed and prevents any fluid loss while installing the new caliper. Install new caliper and pads. Move the flex line from the old caliper to the new caliper. Since you blocked the return port in the MC there should be almost no fluid drips from the open flex line. Attach hose and catch bottle to the speed bleeder. Open the speed bleeder and pump. The first pump will go to the floor because the piston will move out taking up the slack between the piston and the brake pad/rotor. The second and third pump will firm up the pedal. I just did this this week. It was the quickest brake bleed I have done with Maxima/240SX calipers. No wasted fluid too. MC bleeder kits are available from O'reilley's. They contain a variety of plastic MC outlet fittings, but for some reason only one M10 x 1.0 fitting so I buy two. With your brake set up your brake pedal should feel about stock. I will post some pictures later today.