Ok, i've got one of each...840..dated C-18-8 looks to be in excellent condition with the exception of two heli-coils on the intake side, no porting, super clean, included are screw-in studs and gide plates, magged OK. $325+ship OBO. 291...dated C-6-70, again super clean, unported, one heli-coil on intake side, magged ok $425+ship OBO. If interested contact alec at
[email protected] or 858-472-1013
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