Cross compatiblity of upper arms?

So I'm researching front upper arms for LS430 and I think the IS300/ISx50 parts may work.  I know the part #'s are different between IS300/ISx50/LS430, but that doesn't mean it won't work.  I do know that the IS300 FUCA's will work on the ISx50.

LS430 - 48610-59035 - ARM ASSY, FRONT SUSPENSION UPPER, RH 
ISx50 - 48610-59065 - ARM ASSY, FRONT SUSPENSION UPPER, RH 
IS300 - 48610-59025 - ARM ASSY, FRONT SUSPENSION UPPER, RH 


[U][B]Picture 1: LS430 front suspension[/B][/U]

[IMG]http://lexus.sewellparts.com/images/oem/700x500/481190.jpg[/IMG]

[B][U]Picture 2: IS350 front suspension[/U][/B]

[IMG]http://is.sewellparts.com/images/oem/700x500/482890.jpg[/IMG]

[B][U]Picture 3: IS300 front suspension[/U][/B]

[IMG]http://is.sewellparts.com/images/oem/700x500/480809C.jpg[/IMG]

the most likely place you'll run into issues is the caster (not necessarily bad). the lexus arms i've seen are very similar, but the fore/aft placment of the bj differs.

[QUOTE=OG;437233]the most likely place you'll run into issues is the caster (not necessarily bad). the lexus arms i've seen are very similar, but the fore/aft placment of the [B][I]bj [/I][/B]differs.[/QUOTE]

ha, he said bj. 

:shrug:

Anyways, any luck scooping up the megans and checking them out for comparison?

No, didn't have a chance.  Figs Engineering said they won't work, so not sure if I should put in the effort to even try.

Thinking I may just get Nagisa or Moonface arms.

those moonface joints look legit. i prefer the shim method to the inner adjustable type.

Link to the moonface arms?

[URL]http://vip.genb.jp/item_detail/808/[/URL]
 
they actually have a new vip line that has lots of cool shit.

but IS300 UCA will work on isx50? cus isx50 work on gsx50 and need an option haha

[QUOTE=BAHC;437445]but IS300 UCA will work on isx50? cus isx50 work on gsx50 and need an option haha[/QUOTE]

My friend used IS300 upper control arms for his 06 GS430 and it worked.  I've been told the ball joint taper isn't the same, even though it bolts up.  This may cause issues down the line.

[QUOTE=OG;437316][URL]http://vip.genb.jp/item_detail/808/[/URL]
 
they actually have a new vip line that has lots of cool shit.[/QUOTE]

Holy shit that awesome !