I can't give you numbers but they are pretty hefty to say the least. They do sit well back in the enginebay in a B310 though and being a short engine I doubt the extra weight would be much of an issue. They aren't much longer than an A series. The firewall on a B310 is shaped perfectly to accomodate the VG and needs no cutting but the mounts are too far forward to be attached to the crossmember so they would need to be fabricated onto the chassis rails. Look at all that space in front of the engine! ...

-Ed