Is it possible to take a 2.25 early 90 engine and gear box and fit it into a series 2A without majour mods to the mounts? Also will the gear box fit and couple up to the drive shafts as the gear box is diffrent in the 90. Thanks for the help!

i want to fit 90 disc brakes servo etc into my series 2A will the front discs fit the front hubs and will the servo fit onto the bulkhead? Thanks