Hey Gary,
Sounds interesting I'm sure, but I think you'd be dissapointed with the overall performance (other than the extra space) after that 150 of your's.
I'm not a fan of the H2AD, always concerned me to have a duel mag of a single drive, kind of defeats the purpose if there is a drive failure don't you think

Now, if you were to re-engine it with a 180hp or greater, well then, that would be interesting....
Good luck with your decission - I'm sure you'll make the right choice

Cheers