I've got myself some awesome recaro seats as you can see here..

Now I'm not totally sure how to go about fitting them, I could get some mini subframes and just put a bit of steel plate across two holes and drill holes in the plate and then bolt the seats to the plate but I thought this might make them a bit high?
Another idea I had was to bolt the seats directly to the crossmember at the front and make some form of bracketry for the rear to stand the back up.
But you have to bare in mind I only have a stick welder to hand to use to do any welding. Plus I'm on a budget and want to do it cheap ha.
I'd really appreciate any help cheers :)