Hello,
Both the profile Peacemaker and the full fuselage version are definitely smaller than the Flitestreak. I have flown my profile Peacemaker with Oliver Tiger power, back to back with the Flitestreak with FP 20 BBTU. Guess what, the power delivery from the Tiger beats the FP 20 as far as I am concerned! Both set ups are absolutely superb, but I prefer the Ollie. I have built a couple of full fuselage "stunt " Peacemakers, again Ollie powered. They are no where near as good as the profile version, don't ask me why there is such a big difference, I really can't figure it out.
If you want a glo powered version of the full fuselage job, then go for the FP 20 with BBTU, better by far than most anything else. But why not go the Oliver Tiger route. John Oliver has restarted Ollie production! I bet an Oliver Tiger Major (3.5 cc) would do wonders for the full fuselage model.
Regards,
Andrew.