ORIGINAL: mikegordon10
I'm sorry to be the one to tell you this but all the high performance, reasonably priced 1/2 A Glow engines are no longer available. I'm talking about the GZ, VA type.
Not everything is about racing. The norvel engines make some high performance sports engines and they are available here, together with spare parts; [link=http://www.nvengines.com/]NV engines[/link]
Thunder tigre makes a nice timid and quiet sports engine available at tower hobbies; [link=http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXRWT3&P=7]TT 07GP[/link]
Old-school and noisy Cox engines and parts are available here; [link=http://coxengines.ca/]coxengines.ca[/link]
1/2a has never been as easy and accessible as it is today with the modern radios and all those nicely sized ARFs.