Barney-style 83/4 build

Is gonna be a street car, daily driver. Haven't built the engine/ trans yet but not making anything crazy, probably gonna end up with around 300hp. I ask about the driveshaft because strange engineering sells brand new for like $450 and I assume shortening and balancing an old one would cost a few hundred

last time I had one shortened and rebalanced it cost me $85
the same place has also build me brand new ones for about $250

if you have small yokes all around now and the 360 and 8 3/4 both have large yokes then the difference in price between a regular U joint and a conversion U joint might almost make up the difference between having the stock driveshaft redone, and having a whole new one build