the w58 trannie is "basically" the same but not totally but change the bellhousing and it will bolt up
that's the end of the similarities between the mk3 and mk4
my car still has a few bits which need more paint on them as they missed but there is slight colour problems which probly at the end of this year i will get the whole car repainted again but it will do for now
once i've upgraded the compressor housing on the turbo i plan to get my goal of 400whp on 15psi