i have a 1959 for ranchero with a 352 fe. i had a c6 beefed up with shift kit and higher stall.
i joined the engine and transmission, and installed.
i attatched the old mount and cross member to the c6 trans and found it does not sit in the same place, it is about 2 inches further back.
the engine mounts i used are (anchor motor mount part # 2141). the same that were on before with the 352 & cruise-o-matic.

... is there another trans. mount & cross member from another year that will work... engine mounts... should i fabricate my own cross member...
any ideas?

 

I own a 59 car, same frame as a 59 ranchero, that I have put a 255V8 and a C4 in. My transmission ended up 2" in front of the stock cross member. I took a piece of 1/4" steel plate and drilled 4 holes, two narrow ones for the crossmember holes and two wide ones for the back of the transmission, spaced up and back to line up with all the holes. I made a sheet metal plate to go under the transmission casting. Then I took 1" thick 4" wide rubber belting, cut it into 7"X4" blocks, and drilled the widely spaced holes with a 1/2" wood drill, one of those spades. (twist drills don't work in rubber). I bolted the 1/4" thick plate to the crossmember, and bolted the plate, stack of rubber, the sheet metal plate and the transmission to the wide holes. Now drop the car to the ground, look under, and make sure the angle of the back U-joint is equal and opposite to the front U-joint. You can measure with the car up in the air and it gives the wrong dimension, eyeball with the car down is they only way unless you have 4wheel lift. Add or subtract rubber blocks until the angle is equal. I got the angle wrong the first time I did it and broke the tail housing off the C4. Make sure, since your transmission is back, that there is enough slide joint in the yoke to avoid crowding when the suspension compresses up. If not, you may have to get the driveshaft cut back at a Spicer truck parts dealer. I needed more space, so I had a CV joint welded on the back, and set my front angle to zero, or straight. I had an annoying vibration, which turned out to be the wrong balance flywheel on the engine, not a driveline problem at all.