[BossHogg69]

It's more about the total length of the driveshaft than anything. As you increase the length, the diameter of the d.s. needs to be bigger to maintain the strength - 3.5" or 4" is probably what you're looking at for a one piece for a lwb. What's the measurement from output shaft of the trans to the pinion on your rearend? Some shops won't build driveshafts over a certain length.

When you factor in the increased diameter, I don't know how that all fits in the stock x-member, as I don't have one to measure. I'm running a PB Fab x-member with a 3.5" driveshaft and it all fits okay, lowered 5/7, but mine is swb. I'm sure you could run a string from the trans to the rear, take out the rear springs and cycle the suspension to see what will or won't work.