I've asked the guy from that marine website to make you a space marine variant as well.
He's gonna make one this weekend and upload it asap then, he said he's gonna do it for a price you can afford wink (I showed him this topic).
It wont be exclusive, but hey! you'll get a space marine.

good luck with it.
regards,

Formerly known as dennis_fantasy
Portfolio - http://www.designorhea.com/
Project - http://randomchance.cherrygames.org/