I think you will be happy with your purchase. Reskit makes quality stuff. This is their F-111A exhausts for the Hobby Booboo kit:
Much finer than the G-Factor set:
G-Factor on left, Reskit on right. I think I'll repurpose the G-Factor set to make a space ship or something. With the casting "bullet" in the exhaust, I'm thinking "Space Battleship Yamato".