Loaf thank you for the info. I've also contacted Martin about the conversion parts. I'm getting the back issue from UltraVW (March 2005) to do some research on the installation (Martin noted that this issue shows the install step by step). Also in regards to the rear mount (he only has them for the newer magnesium cased 901/914 tranny) but that is not a big deal. Also he carries 2 types of the front nose cones for early/late trannys. So you will have to figure out whether your 901 is made from Magnesium or Aluminum before you purchase the parts. I will be also purchasing some of his parts to do this conversion (hopefully by December) so that I can complete my T4/901 install. So depending on who gets their parts first I might need to bug you (your free to ask questions if I get my parts first) about the install.
