Hey Scott,
As Mike mentioned, Frank's is gone. I bought a rear spoiler and a front bumper from him years ago. the front bumper was pretty wavy... ok for a drag car but not something you want for a nice street car IMO (although I am running it on my '73 right now).
more recently I bought a cowl hood and front spoiler from VFN:
VFN quality seems pretty good but the front spoiler uses little metal tabs to mount. not a big deal but just mentioning it because I don't think it's stock. the spoiler on my street javelin has molded in mounting flanges...
There's also
US Body source. They've been around forever but I've never bought from them so I can't vouch for quality.
Neither place has bumpers.
Can't wait to see what you do with your Javelin!
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-asifnyc- penngrove, ca (SF bay area)
asifnyc.com - Javelin Blog
1974 AMC Javelin NASA American Iron road race car
1974 AMC Matador road race project
1975 AMC Gremlin shell
1973 AMC Javelin/AMX - street
1975 AMC Gremlin - street
1970 AMC Javelin shell
1962 Rambler American vert