Would a rear exhaust work on this? I tend to use them because it looks better and is easier to route the exhaust out of the cowl. I know I used one on a P47 thunderbolt and it put the prop at exactly the right distance from the firewall. Sorry about all the questions, but someone gave me 4 arfs still in the box and I'm building one and planning for another and haven't had this one out of the box to do any measurements! Lol.