Musicman in a weird cabinet

First of all, this amp sounds incredible. I've owned some great amps, blackface twins, JCM-800 and 900's, Rivera Twin Reverb II (my personal fav), and many more. This amp is probably my 2nd favorite. The jcm-800 is an amazing head, but the sound is so overused these days. The MM gives me more room for original tones. Anyways, I'm pretty curious about this weird MM. Here are some pictures and info.
It seems to be an hd-130. The serial is:B005831
chassis number: 2275-130. I'm assuming this is a 1975 hd-130. It has a 12ax7 in the preamp I believe. The speaker in this wacked out cabinet is horrible but it sounds amazing through my marshall 1960a 4x12. The cab says "overdrive" on it and is tweed.
The tremelo is kind of sqrewed up. Here are some pictures:http://www.vampteam.com/images/3b_1_b.jp ghttp://www.vampteam.com/images/56_1_b.jp ghttp://www.vampteam.com/images/aa_1_b.jp g
I bought it off of ebay for 230. I was happy with the deal. I might slap it into a twin reverb cab and put a few celestions in it.

if your going to do that i wouldt mind getting my hands on the cab, i need somthing cheap to stick my chassis into to! but i couldnt tell you waht it is, maybe a 1 12" combo recovered

I plan on keeping the cab. I like weird things like this.