Suggestions for cleaning exterior of 4spd

a little trick i learned, (first plug the speedo hole)Soak it in oven cleaner then wrap it in cheap dollar store saran wrap - completely airtight, let it sit 24 hours, then just cut it open and hose it off. With the oven cleaner unable to dry out it completely dissolves the grime and makes a messy black slime that just falls off the part. make sure you wash thoroughly and get the film off before paint.

you can also do this as a way to strip paint.