I pulled the 390 out of the 61 Galaxie and am now trying to get all my parts together so that I can reseal it and put it in the 62 Galaxie. As I had been told the FE truck bellhousing I have is 5/8" deeper than the car bellhousing that came on the 390 so I will be able to use my small-block toploader with out any problems. I would also like to use the truck clutch and flywheel because the clutch is bigger and I am concerned about getting a starter to work with the truck bellhousing and car flywheel, however I am concerned that a truck flywheel from a 1969 360 would be balanced differently than the car flywheel from a 1961 390. I didn't even think to pull the harmonic balancer from the 360 when I took the clutch and bellhousing. Also the balancer from the 61 is small, basically a pulley. So what do I do, the last thing I want to do is put it all together and have it come apart at 3000 RPM