I would really like to get one of the older Marshall cabs (with the silver-ish cloth) and get a Marshall 1987x Plexi head for it. J’s studio sound is going to be different from his live sound as everyones is pretty much. Get an old American Fender guitar, and either an old tube Marshall halfstack or an old American Fender amp, like, J has an old Bandmaster combo with three tens in it that he used on Hand it Over. If you could find one of those, he preffers three tens over the four ten model. Dont use humbuckers, P90’s are his prefference and single coils of that sort. P100’s are humbuckers by the way. I’m not really sure of how much you know about guitar gear, so dont get mad if it seems like im talking to you like you dont know anything about it. You’re looking to spend a lot of money for J’s sound. As for a pedal:
Distortions I would get an old Superfuzz, Big Muff or a Z. Vex distortion. J has an Ibanez AD9 analog Delay, (its bright pink) MXR Blue Box, Groove Tubes Trio, Custom Audio Electronics 3+ Tube Preamp, Custom Audio Electronics Super Tremolo, MXR Phase 100, Electro-Harmonix Small Clone, E.H. Memory Man, E.H. Deluxe Electric Mistress, and the E.H. Clone Theory.

Gear J also used on Hand it over includes:
Vega 6 String Banjo from the 30’s,
Gibson Acoustics include:
1967 Hummingbird
1969 Dove
50’s LG-2
40’s Gibson J-45
40’s Gibson LG-2

Fender Electrics include:
1965 Sunburst Jazzmaster (the one he gave away…his first guitar I think?)
1962 Blue/Tortoise p.g Jazzy
1965 Lake Placid Blue/white p.g. Jazzy
1959 Blue/gold anodized p.g. Jazzy.
1957 Esquire
1958 Telecaster

Gibson Electrics include:
1961 Les Paul Jr. (cherry…sg shape)
1952 Les Paul Goldtop (possibly one the first 100 ever made).
1962 Les Paul Special White (SG shape)
1959 Les Paul Jr cherry (Double cut away).

Gretsches include:
1965 Double Anniversary (green)
1967 Tennesseean (red)

Danelectro guitar:
Pro 1 ("I’ve got a couple Dan Electros. I have no idea what model this one is, but I know it was made in the fifties. I like its weird Flintstones-ish shape.")

Vox:
Phantom 12-string

Martins:
1965 experimental model.
1968 D-28S
1967 5-18
1965 D-21

Amps used are:
Fenders:
1959 Bandmaster (3-10 model)
1959 Twin
1956 Champ
1961 Concert

Marshall:
(various colors on various cabs).
80’s JCM800 (used as a bass amp)
1968 Purple Plexi 100-watt Superbass

Vox:
Super Berkeley with 210 cabinet.

Its all about a RMC wah and a Lamb’s Head Big Muff

It’s one of each.