X-heads or J-heads on a 360 LA Engine

dano said

Whichever one doesn't have the seats pounded into the head. I went with Aluminum heads because every alphabet and "AWJJ360" head I had cost way more to get corrected with bad seats, worn guides, new valves, etc and I still would of had an open chamber head.

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You do have a point here and I would like to add the fix for that with the j s with 1.88s was to have 2.02s installed. If you find J's with 2.02s chances are they've been rebuilt already but some say they came with 2.02s but that's another thread I think. I have a set of Js on th ebench now with 2.02s. i took them apart to clean them up. The intakes were knurled and nice and tight the exhaust has 15- 20 thousanths play it feels like LOL! so I need guides installed.