[blykins]

He will of course need an FE to TKO bellhousing. If he wants to use the transmission as is, then he will need to use a bellhousing spacer or use a Quicktime bellhousing. The Tremec has a Toploader mounting pattern, but the input shaft is longer.

Depending on what clutch setup he has, he can reuse the components if they're in good condition. I sell FE flywheels with an 11" pattern, so if his clutch is an 11" Long pattern, he can reuse it.

If he has a hydraulic throw out bearing, he can reuse it as well. If the bearing is fork actuated, then he will need a longer clutch fork for the wider FE bellhousing.

I sell all of the above parts and will provide any info/support that he needs throughout the swap process.