Tahoe/yukon seat exchange issue

[Santman]

I recently bought 2 front yukon seats with integrated seat belts for my 70 blazer. My issue is I can't utilize both stock bolt holes on one side or able to bolt in a front corner since the seat can't be backed up far enough to expose the front stock bolt hole. Anyone else have the same issue or a solution?

Or, what method are you all using to mount these seats or straight to the chassis?

Thanks