Well the SOHC conversion (in theory) is a little easier then the 5.0L converison. It's just scarier because nobody has done it.
The SOHC 4.0L and the OHV 4.0L at least share the same block, size, and basic underhood layout, makingg it that much easier to drop in then the 5.0L.
I'mworking on a way to adapt my A4LD (custom built) to a 97-98 SOHC. The problem is the A4LD 3-4 shift and convertor lock up are controlled by the EEC-IV computer. If the SOHC tranny controlls can be adapter I may attemt this conversion.
Can you imagine? A SOHC in a BII? hehehehe.......talk about a monster....