Have a look at the XJ6/12 or XJS front subframes. Don't bother with the 86 on XJ40 ones.

Once removed you can sit a truck frame in there real nice and weld it in. Don't bother with the rubber mounts.

Complete IFS with power in one job!!

There was 1 Roller over here with a 6-71 on it but I don't think it ever got finished.