It does have the 40 series top. I purchased the H55F a couple years ago. I can't remember the gentleman's name. Somewhere out west...Oklahoma maybe. The assembly came out of a BJ40 from Norway or Denmark I don't remember exactly. I purchase the correct input shaft and bearings for a 2F. OTRAMM was recommended as the shop that could handle the rebuild.
Good choice. Ryan has a really good rep.
. It was recored the first time but the first shop didn't tin the inside of the tanks when they had it apart so then the upper tank cracked and they had to patch it in the outside at the second shop so it looks like hell but at least it's finally sealed. If I was in your shoes I would just buy a new rad!