I'm replacing the original 3-sp trans in my '73 FJ with a 4-sp trans that I believe came out of a '77 FJ. I can't get this thing to bolt up and I'm ready to throw in the towel. I got the trans to slide almost all the way in but a slight gap still existed beween the trans and bellhousing. Tried pulling it together by tightening down the four trans bolts and that was requiriing way too much torque. Gave up on that before I broke something. Tried a lot of the tricks I've read on the forum with no luck (such as pushing in clutch pedal and cleaned up input shaft with emery cloth.) Clutch disc and PP are aligned via an alignment tool. Need help on this one!!! One thing I'm uncetain about is if my clutch parts will work with this trans or not...I've got a brand new clutch disc, PP, throwout bearing, and pilot bearing for the early (3-finger style clutch.) Therefore, needed to use the older clutch fork. Here's the problem: the 4-sp clutch fork was on the right side of trans, but my slave cylinder was on the left side. Didn't look to be a problem as the 4-sp has an opening on each side. However, given the problems I'm having, I just don't know. Anyone have this problem?