I would not recommend doing buisness with this company if you are ordering a aluminum driveshaft. My personal experience is about 1 week ago i put in a order for my 85 monte 9" ford rear too a 350 turbo with a 6" tailshaft the measurments i gave was 55 3/4 even if it would have just been 55" it would have worked i have the receipt stateing it was 55 and 3/4. When i called to let them know about how my driveshaft was 2" short there shop order read 54", i spoke with a man who was not very helpful trying to put the business i order my parts threw in bad saying they order it wrong when i was at front of them when they called my driveshaft i had to pay them on the spot. PST has not tried to make there mistake right $560 dollars is what i paid and to have them quote on quote fix my issue or how the man said "re-tube it" the cost is $240 which i will not pay for a mistake they made unfortanetly if anyone is intrested in a 54" aluminum driveshaft let me know and just make me a offer this is my review on them.