i used to go mustard and ketchup now for about 6 years i go mustard only. and i dont like ketchup anymore. in fact i like tartar sauce with my fries now.

goirish,

i need to go with 4 inch standoffs for balancing and clearence of the muffler and carb on my sukhoi that has a rounded cowl and will fit the 62cc engine with little cutting to the bottom of the cowl only for the engine head and spark plug wire cap and muffler downtubes. the pitts allows for more room on the side of the head but takes up more room behind the head as you can see in the photo's. the standoffs supplied dont clear the carb or the muffler either. for the carb with the supplied standoffs i would have to cut a hole in the firewall. using 4 inch standoffs more than clears the carb and muffler on my 62cc. as for a 20cc i don't know and for whatever plane you are implanting that engine in.

the bolt pattern for the 20cc is probably to narrow for the 62cc pitts to mount correctly.