Flange Style

18 degree Chevy
2-Bolt
2300
3-Bolt
4150
4500
Center
Crate Flange
EFI
FPT
Flanged
Flush
Ford N
Left
No Flanges
Oval
Oval Port
Rectangular Port
Right
Round Port
Socket Weld
Spread port/Stahl
Square
Square 4-Bolt
Square Port
Standard
Weld Neck