These are a conversion of Sketch up models I converted to GTR2 a couple years ago. They are heavy,pushy,bouncy,rollie cars. These drive like a battleship,in putt is not very instantaneous and have longer braking distances. A hearse is very heavy,my 74 superior Cadillac weighed 6480 lbs(2938.7755 kg's). My intention is to try and simulate what it's like to drive a 21 foot long,6500 lb car.These car conversion's are very,very heavy in polygon count(seems some of these sketch up modelers model right down to the screw holding the door sill in place. I had to remove a lot of the polygons just to get it to export out of 3DSim Ed Gen.1 and then I have added to it some with my little item's and tweaks. )so these car's may be very taxing on your PC.I have not tried them with the Anniversary mod. So I don't know if there are any issue's there.