The following is a MRC catalog page describing the Iron Man (via Ninfinger).
This old kit provided a lot of advanced features that often are considered 'modern'. Starting from the bottom up, the kit included: pre-cut balsa fins, a quick-switch motor mount for 18mm, 18mm + 2 MRC FX, or 24mm flights, 3 plastic outboard 'recruit' boosters (which also accepted FX engines), plastic launch guides for a 1/8" rod, molded body wraps, an ejection baffle, a short Kevlar shock cord, a Nylon 'chute, and a complex molded plastic cone. The FX engines were small diameter, low thrust, long burn motors that were used mostly to generate smoke.
I also had to repair one cracked fin and replace one of the three recruit outboards, which really was missing. You can see the unsightly plastic doohickey that I used. Some day I'll replace it with either another piece of junk or maybe even a tube and some cones. For now, it is at least flying well.
Along the way, I added a 1/4" lug to allow flights on 3/16" or 1/4" rods. I also found the short Kevlar line coupled with the energetic 24mm ejection charges was causing the nose cone to come off. On the last flight, the molded hook broke off. I have now added a long piece of elastic and a Kevlar loop through the cone's base.
The recommended motors included the C6-3 and D12-5, with or without FX outboards. I have flown it twice on C11-3's and twice on D12-5's. Both are good choices and provided nice flights. I add a thin tape thrust ring and retain the motor with a thin clip (see photo). The baffle and largish tube make 'chute prep a cinch. I really like this rocket. It is prepped for its next flight as I typed the review.
I finally decided to get rid of the funny looking plastic doohickey that I used as a replacement strap-on booster. I had build a replacement, of sorts, using parts from scrap rockets. However, when I received samples of some BT-5 resin cones and engine bells from I Build Rockets, I built a more respectible version.
Before and After: