Yeah Bert, S.U's from a datto friendly chap called Grant up north. They are quite tidy,took to them with degreaser a bit, made some gaskets n darkied them up to suit. Head may get treatment but not for a while aye. No airbox,ill have a scout around for an appropriate filtration system/cheesecloth.
I just caved into daily driver-but-half-reliable-and-cheapishness, so no traditional sidedraughts anymore...they were so sweet
