A 16J engine, so it's a 1622cc from a commercial, more than lightly a J4.
Yes, a 1622 cc, with twin duplex timing chain and a proper oil seal on the timing chain cover, unlike the original felt type. Of course the sump is wrong, that's going to get bashed by the front axle, I hope it can be turned round. The original JB engine was approximately 50 BHP, the 1622 is about 60 bhp.
