h1 rims have 7" b/s stock.
the easy way to make them fit most guys do is add drw hubs to the front end. and on your rig this would be super easy. just find a set and get the nuts that hold them on to the srw hubs. bolt on and go.
the rear you have 2 ways . spacers for the rear prefer steel if you will be hard core on this truck. or best is to find a drw from under a pickup drw with the box on it and the big bubble flares on the box. the extra width helps take the place of spacers. then swap out the drw hubs on the wide axle and install srw hubs to kick it out farther. some custom brake work will be needed. not to hard tho.
then the h1 will bolt on the rear just fine.
but if you dont want to do this then get a set of recenterd rims.