Hi! newbie here. I have a Bushmaster. Experiamental stretched Pacer, with big long Supercub wings. I am wondering how foolish it would be to hang an O-540. I'm not so worried about the weight, and balance, but rather the strength of the tubing and firewall area, on airplanes that were meant for 0-320's and seem to have done well with 0-360's. Any comments would be welcome. Thanks!