Mmmm, when I bought my last 2a swb for restoration a good 10 years ago now it sported a 6 cyl bulkhead with a 2.25D engine and I always wondered why, maybe the po had a plan that never materialised I don't know but with the 6 cyl bulkhead being fitted it took up a lot of room aspecially around the bellhousing area as it just looked like someone had grafted a cover between the bulkhead and gear lever, the hi / lo lever's couldn't work properly due to fouling on something, anyway at the time I planned on using my then newly recon'd 2.25P engine out of my S3 I had for the restoration of the 2a with inc buying and restoring a 4 cyl petrol bulkhead then later converted it to a 200tdi