Momo - did you ever sell this? I saw it on ebay a couple of weeks ago.
Also - are there any modern engines (ones you can still buy) that will fit in the Nitro Hawk other than the TRX .15? I imagine the biggest challenge is finding one with a long enough crank, but do the stock engine mounts and exhaust work with something, like an O.S.? I'd like to replace the tired TRX 12 I have, but want something that's still made. TRX 15s with a long crank are tough to get ahold of.