You can do this with iron or aluminum heads , or with iron heads you can weld a thick washer to new freeze out plugs to go in the rear of the heads and then before installing them drill and tap them for 3/8” pipe, then use 90 degree fittings to get the lines top side.
Note that if you do the freeze plug deal that as I said the spacer washer needs to really be thick because the exh port runner is right behind the freeze out plug.
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs!
And he was not talking about 1/8 or 1/4 mile ETs!
1) 1940s 100% silver 4 cup tea server set.
Two dry rotted 14 x 10 Micky Thompson slicks.
1) un-mailed in gift coupon from a 1972 box of corn flakes.
Two pairs of brown leather flip flops, never seen more then 2 mph.
Education is what your left with once you forget things!
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