I used a cap britan for my latest space ghost mod. except for the head, and I cant remember who's I used. Constrictor's head makes for a good SG though. I started to use a Maxima cape, but decided to make one from scratch instead.
for mine I used a doc strance, mask from constrictor torso and hand from blizzard and sculpted gel superglue into his powerbands. There is bound to be an easier way now though... I made mine when IC was the only set out so parts were a bit limited.
I would recommend these though, they are all easy to get and not difficult to part with for the sake of a good mod:
head: Kobra Fanatic
Cape: I like strange's but it took some cutting. any cape could work though
legs: any spare flier without bulging parts. black adam would work well, so would sinestro
arms: I love blizzard's open hand, it's perfect for him to be pressing his powerband with
torso: I think the hal jordan GL or sinestro are decent for a medium build
i've sen some HT Hawk mods of SG that turned out really nicely... the Icons Superman looks like he will be nice modding material as well.
here are my customs.
Bolt is Quicksilver with a Kid Quantum head.
Raven is Criminal with a Metropolis SCU gun.
Space Ghost is Black Adam with Maxima's cape.
just some simple shaving and re-pianting on these. i also made some for my friend, soon as i can get pics of them i'll post them too. http://pg.photos.yahoo.com/ph/corkey...el%3as,1%3af,0
i think that link should work.