Flange nuts, eh? That would do it fer sure. First time I did the frame clams I salvaged a set of bolts from a wreck in a scrap yard and then had fun trying to ease the nuts through that oval hole without hitting the gas lines. The second time, I used metric caps and "glued' the nuts into the closed end of a combo wrench using white pipe sealant and green masking tape. The third time I reverse engineered the whole business and stuffed the bolts in from below using extensions and swivels and slammed the nuts on from above. Was still able to tighten things down by using the oval holes to access the bolt heads but a lot easier to keep the wrench talking to the bolt while putting some turns on the nuts at the same time. Last time? for that exercise unless I lose one of the urethane inserts that I subbed in for the stock clam rubbers quite a few years back.
Nick
