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Vehicle:
This product is compatible with the 8-bolt fuel tank flange of the AP1 and some early AP2.
This product is not compatible with the 6-bolt fuel tank flange AP2.
Pumps:
The pump holder can accommodate 39mm pump cases.
The pump holder spacing is wider to allow installation of twin Walbro 450/525.
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Hardware Kit Version: This selection determines two things: • A) The style of fuel-pump output bulkhead included. • B) The size of the fuel-pump hose included.
A) A stock plastic hat requires a flat-panel bulkhead with seal washers and a nut (shown at left). A CJM Billet Hat uses our 6AN swivel bulkheads (shown at right in the complete kit).
B) Most 255–340 LPH pumps use a 5/16" barb, while Walbro 400, 450, and 525 "Hellcat" pumps use a 3/8" barb.
The option you choose will determine the barb size on the bottom of the bulkhead and the matching hose to the pump.
Note: If your CJM top hat is an older version that uses bulkhead nuts and crush washers, select the "Stock Hat" option.