To fit a Blacktop two piece sump to a silvertop.
The main differance is the bearing caps and bolts. The silvertop has much thicker main bearing caps around 20mm. These hit the cast part of the blacktop sump. It’s a combined windage tray / block ladder and sump all in one.
To get to fit you have to grind away where it touches
this is is an st bottom end but it looks the same
