il put my 2 cents into this and you take it for you want. The 4 valve head to me isn't worth the money, even though I have never owned one. You have to buy the entire kit which isn't cheap $450-550 cant remember the price that's for a taida setup and I believe you still have to buy the piston to match. Also you might have to modify your exhaust and the head might get close to the back of your seat. The 2 valve endrigo to me is overpriced. The last 2 heads I purchased where off ebay and where both below $100, with big ports and oversized valves and upgraded valve springs. I did my own porting to them and ported the manifold to match and did a camshaft with the head. These 2 items are the best bang for the buck to get you started and once you do these 2 mods they will also accommodate any big bore or stroker that you do later down the road. Of course a nice flowing exhaust and breathing intake will also help.
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Hammer head Single seater know as herbie
under construction
Aluminum fuel tank, aluminum wheels, custom fuel/cargo rack, entire rewire, trail tech vapor, ported big valve head, a12camshaft, 12 gram sliders, straight intake, kirkey wide seat, front end extension. 4 point harness, welded cage. Hammerhead exhaust.
Blade Single Seater Restore
welded cage, engine build, new wiring harness/electric box, spun aluminum fuel tank.
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