[CAL 58 GMC]

IFS is the only way your going to get that car like ride and handling your looking for. There two way to get there. First is the Mustang II IFS as Big Chevy 3600 is talking about. There are several companies that manufacture kits, Heidt's & TCI are among the best. The second choice that was popular for many years and the least expensive why is to clip a Camaro or Nova sub-frame to your stock frame. Here in the United States there are wrecking yards full of these 70 to 81 Camaro’s to use as donors. But since you’re in Sweden they might be hard to find. Both ways are going to require fabricating & welding to install.