Drive shafts out (or split at CV joint to not loose your oil!), Starter motor off, disconnect clutch cable, disconnect selector rods, disconnnect speedo cable, remove Amal from gearbox, support engine, undo all bell housing bolts, undo crossmember from chasis, drop down and out mate!
Think thats about it! Sure someone will say if i've forgotten anything!

BTW, what spec is your car to make 252bhp? Is that @fly or @wheels?

Karlos!