I just bought a AKM model p 40 warhawk E plane http://ak-models.com/electric_p40.htm

Do you guys think i can stuff a AP engines 15 in the cowl or just stick with a .074 norvel or a AP .061? the 15 would weight about 2 ounces more than a gws 400 with gearbox. the 061 and 074 norvel would be about the same or less weight.

Are the AP engines good reliable engines? how does the 061 compare to a norvel 074.