Go with the .21 conversion kit..... .26 is too much and all you will be doing is trying to keep the nose down..
Yes there is a HUGE difference in performance/speed/power between .15(2.5cc) and .21(3.5cc)
If you wanna whoop his ass just buy a Schaumacher... does 70mph+ out of the box... Its 1/10th scale with .21 engine with 3 gears.
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Mark Chance
Philipsburg, St. Maarten
Caribbean
"Before you can be Old and Wise, you must first be Young and Stupid"
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