Hi Rob,
I'm converting my '67 split to IRS at the moment.
I use a gearbox (code AT) and arms of a 1303. The engine will be a 2.2 litre type 4.
The donor parts of the 1303:
The fitting:
At front I go for Porsche 944 dics brakes, at the rear for the 1303 brake drum with 19mm cups.
Wheels: 17" Porsche Cup II, front 7J ET55, rear 8J ET70.
Instead of using an arm of a 1303 you can use an arm of a Porsche 944, they are similar, but a 8J with ET 70 won't fit then.
Also I am going for air-ride, but on this stage no useful information about that. That's still "under construction".
The total project of my split bus can be found on
www.airtomove.nl
http://www.airtomove.nl/phpBB2/viewtopic.php?t=36
It's - unfortunately - in Dutch, but hey, pics tell more the a 1000 words.
cheers,
Luuk