Matt,
I do have to plead guilty as charged because I believe my radio HAS a throttle and it is NOT on a two position switch, I am well known for bolting on more power than the 'book' calls for. As an example, the current bird was designed around a G-62 and it is going to get a 3W-75 but there have been some structural adds made to reduce the risk. However, the problems I have heard of (FW's coming out, wings delaminating, wings folding and etc) were NOT overpowered versions of the equipment. Read Roger Guinn's comment carefully as it describes at least one in that category.

Roger, your idea works well for those *I* see. Got any ideas how we solve the problem for those we don't see?

mAvRiCk, I THINK carbon fiber rods are over kill but they DO work. I approach the FW from two or three directions. First I make sure there is tri stock all around. Second I pin with 1/8 dowel stock. The third 'trick' is fiberglass cloth on the inside of the FW and sides in a "U" shape BEFORE the T-nuts are put in. That transfer's the load to the aircraft sides and keeps the FW attached. In cases where I am seriously concerned about how much excess power I am putting on, I put a wrap of glass on the outside but under the cowl.