We had a 1983 Buick that was the same thing with the 307. Those things are tanks to say the least and are comfortable as all get out. I remember taking vacations and laying down in the back seat and falling asleep so many times as it was so comfortable. Any ?s lemme know as I know those vehicles inside and out. One thing I can tell you is the 200R4 trans is very finicky. So switch out that trans fluid ASAP and new filter as well. Also those things are not meant to go faster then 75,lol. A good tune up, trans filter/fluid, radiator flush and a few other things you will want to do it as soon as you can. Trans was the weak spot as the 200R4 from factory ****** but if you ever rebuild it upgrade the internals across the board and no shift kit.