Blazer/Suburban fuel tank crossmembers in K30 frame?

[K30_dump]

Hello all,

I know many here have converted from the saddle tanks to a Blazer/Suburban tank with success, but my question is: are the factory crossmembers for the tank a direct fit into a K30 frame ('84 cab & chassis to be exact)? I know it'd be easy to fabricate something, but I'd rather just use them if they are a good fit. Don't see why they wouldn't be, as the channel height is smaller back there and looks to be the same size. Anyway, would like to hear from any who have done this...

Thanks,

Joe