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Assuming you are maintaining your OEM 4X113.3 when stud pattern, and 0 offset: Koenig Rewinds are the cheapest of the lightweight wheels. My 15X7’s were only $106/wheel from Summit, and weighed 14lbs each. On the expensive end, I also have Ray’s Volk TE37’s in 15X7’s and 11lb. Aluminum wheel spacers are not the end of the world they are less than 6” in dia, so the rotational inertia is far less than what your wheel is contributing. On a 15” wheel, most of the mass is way out at (for example) 13” from the axis of rotation. Rotational inertia is proportional to the weight, but also how far the weight is from the center. Greg Ira used Aluminum wheel spacers, and he is a three-time SCCA national champion. When you are trying to maximize allowable track (rule book), using OEM struts, limited camber adjustment, and a 0-offset wheel, sometimes it’s the only way.

$1200 for the used Panasports is a bit high IMO unless they have good tires in the size you need. I have 16x7 et0 Konig Rewinds from MSA (thezstore.com) which were $600. With 205/55 Firestone Indy 500s(budget RE-71r w/higher 340TW rating, $143) they will rub approaching full compression without rolled fenders. The combo weighs 37.6lbs and the rim is 15.5lbs, both numbers from my scale. I doubt the Panasports are lighter. Unfortunately I don't have my notes on the rocker panel to ground distance for this shot, but the car is ~1/2" from hard bottom. The car is lowered and I plan to roll the fenders. Rough math, (25" tire/2)+(rim diameter 17"/2)+40mm means the top of my rear fender is 22.5" off the ground with the 25" tall tire. Measure from the ground to the top of your fender + your current rocker height and you'll have a close approximation of how low this is in relation to what you're going to run. 205/50 likely won't rub and some other 205/55 tires may not rub. The Indy 500's are fairly square.

New ITB intake is getting sent off to China to CNC cut! This fixes a few mistakes on the first version and also gives me the stock J-hook pivot as an option. It will feature a bolt on banjo balance bar and ideal injector angles. It's slightly longer then the last version as well.

So this is the finished product if anyone else is interested. It is made out TPU which is very flexible (and hard to print). I have used TPU to create plugs for my floors, wiring grommets and other such.

If you want to get me dimensions, I can 3D print whatever you would like and sent it to you for the cost of postage. Wont take but 20 minutes to print I'm sure.