There are several
- MG F91
- MG F91 Harrison's Custom
- MG Crossbone X-1 Ver Ka
- MG Crossbone Fullcloth
- MG V-Gundam ver Ka
- MG Core Booster
- MG V-Dash Gundam ver Ka <--this is actually V-Gundam+Core Booster part; basically this allow you to switch between V, V-Dash and V-Gundam Hexa

MG of the MSes of the "2nd half" of UC

Hmm maybe can try assembling the forearm armor upside down?

Hmm I thought MkII ver 2.0 AEUG version (the one with base) has less hip articulation compared to its Titan counterpart?

http://dalong.net/review/mg/m86/m86_p.htm aeug
http://dalong.net/review/mg/m89/m89_p.htm titan

Note that AEUG HD color version is actually Titan 2.0 painted with AEUG color http://dalong.net/review/mg/m82s/m82s_p.htm

The bazooka was sold separately with other weapon iinm (got javelin, and led beam saber)

Actually ReZel is loosely originated from Methuss; Methuss actually can be said as one of the ancestor for Zeta too
http://www.mahq.net/mecha/gundam/z/msa-005.htm <-- can see there's several part from ReZel resembles Methuss, particularly the protruding crotch and backpack, as well as shoulder armor

Issit? Coz RG Zaku II basically reuse RG Char Zaku II parts wat

Or they can go "reuse" route
- Zaku II customs (Johnny Ridden, Shin Matsunaga etc)
- RX-78-3, FA Gundam
- Strike Rouge, Strike Noir

^ Hmm I guess if you're gonna pose the Gundam in standing pose, OYW is better. If action poses, maybe 2.0