Not sure how you made out but wanted to let you know you can modify your seat position to suit your body. I am 6'4 and needless to say there was not enough leg room, my head head stuck out above my windshield like Magilla gorilla with my convertible top down and my shoulders are way to wide for the seat back. This presented bigger problems for me as it's easier to raise a seat than lower it. For you as far as the seat extenders you can either make them or buy them through a parts house like Ames performance engineering and they definitely help with the leg room and an added benefit for shorter drivers is they raise the seat the thickness of the metal they are made out of. and if you want it higher you can just use longer bolts of the same grade with spacers and by making them longer in the front than the rear you can adjust the angle of recline at the same time. Back in my earlier days when I worked as a mechanic I had to do this mod a few times over the years for shorter customers that otherwise were perched on thick pillows. I would caution you though since you are redoing your seat springs and most likely new foam I would wait because the aftermarket springs and foam that I have seen definitely will have you sitting higher then your sagged out originals. As for taller first gen lovers like me using the seat extenders while helping leg room makes things worse in the head room department. My solution was to remove the tracks from the seat and cut the appropriate amount of metal out to drop the height and reweld. It is a little tricky because the part that gives it its height by the mounts is curved instead of a right angle so you really have to pay attention so as not to change the overall length between the mounting holes. The only other thing you have to pay attention to is the relation between the seat bottom and the seat belt retractor on the door side. Make sure there is clearance when you put the seat all the way back. My seat now fits me perfectly. And as a side note this solved my problem of having to stuff my legs past the steering wheel every time I got in or out of the car saving me from having to buy a hard to find and expensive factory tilt column.
