Just plan on doing a little more work to the 194 head. Like I said earlier, unshroud the chamber around the intakes and the exhaust wall side, enlarge the valves and perform some porting. It will work out great.
It is harder to find a uncracked casting, and opening the valves to a 1.94" intake is risking hitting water on these "194" heads. Especially for people not familiar with doing work to the inline heads.
It is just extra work that would not have to be done to a open chambered head to get the same performance.
I am currently working on one now for a customer and will try and post up some pics. It is being setup with 1.94/ 1.6 valves.
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