Standard bore LCB, wit ending of 45mm diameter. That is ideal for standard Engines.
There is NOT enough clearance room when fitting to old cars with rubber couplings which foul. Using 66/68.QL5000 type couplings will help but re=shapinng of manifold is still required in most cases. Alternatively we offer 20/24.C-AEG362 especially made for cars with driveshaft coupling (Only to order).