From reading about the SpaceX program there are remarkably very little left of the Apollo program engines. Having a real model even in disarray would be a useful study.
There's a proposal to build new F-1B engines to power liquid boosters for the SLS (as a future replacement for the shuttle-derived boosters that will be used for the first few flights).
Still awesome to get some of the old ones back, though!
I had the joy of seeing 2 F-1 engines in one week. The first is at the old RocketDyne (now Pratt & Whitney) facility in Woodland Hills, CA (on Canoga, I think), and the second at the NM Air and Space Museum in Alamogordo.
* Confirmed, an F-1 engine stands tall [1] outside Rocketdyne corporate HQ on Canoga Ave just north of Victory Blvd in the San Fernando Valley of Los Angeles. One can walk right up to the engine and have a gander; it's 18 feet tall. You can admire the maze of cooling pipes on the upper half of the nozzle and imagine the heat and roar.
* In decades past, during development of the Apollo space program, Rocketdyne tested engines at its Field Laboratory test facility in the Santa Susana Mountains a few miles West. The sustained outdoor roar of those engine tests was audible better than 7 miles away. Source: My elementary school classmates, blase about the whole thing, saying "Oh, that's just Rocketdyne testing again".
* Lots of facility pictures of several of the Rocketdyne facilities (with engines under assembly) in the Rocketdyne Archives [2]
* It's a safe bet the name "Rocketdyne" would be a portmanteau of "Rocket Dynamics".
* Some rocket equations and stability discussion at [3]