lt1 t56 driveshaft too short???

[piston]

i installed my drive shaft today and noticed it looks a little too short. i measured at 23 1/2 inches and now i installed the shaft and it looks like it has just about an inch of play. when i bolt it up, it has an inch in gap from end of tail shaft to the start of shaft yolk. is that too much or am i still good. i havent drove the vehicle yet but will be soon, its just another paranoid question... also, about angles, i notice if my tranny shaft is about an 1 1/2 inch or so higher than the diff face. do you guys think im gonna have vibe issues? i can always lower it though but just a head start question, if i lower it to be parallel, that mean my shifter will be sitting lower than other t56 ive ever seen. i have a ron tyler mount and still have stock bottom mount. these are older pics of just the tranny before mount but in same location. ill post new pics asap when i get the digi cam back.