Well I got ripped off, BIG TIME ha ha. I bought my M21 conversion for $1100:shifty:
I may have been by Road Tested spares in Campbelltown.

Well anyway what's done is done. So I spoke to aussie 4 speed and he said he would put a XU1 M21 3rd gear in and strengthen it to take 200kw for $1500 or 120kw for $900.

He said that the XU1 3rd is better and will work perfect with the 253 and a 3.36 diff.

Also for anyone that is interested he has a feature in Street Machine in the May issue.