They do seem to stick out a bit too far. When I had my '70, I ordered a correct new set from Koller Dodge (back in '86), the shape on your does not look correct (too round?). Wow, $7,000, you should feel guilty and sell it to me for $7,500! As far as tires, are you saying you want "old" polyglas, as in E/70-14s? BFGs would look good on those Rallyes.
Car looks great and a real good deal. Are the tips to long or simply installed incorrect?
$7K Score! :cheersig it- very nice car. You might be able to grind the welds off those tips cut the pipe a bit and slip em back on.