WHERE to BUY - 8 3/4 center section 489 casing suregrip w/3.91 or 3.55

[SanDiego70RTSE]

I'd like to buy a "third member" as it's called  8 3/4 center section 489 casing  suregrip w/3.91 or 3.55 for my 70 to swap out with the current 3.23 suregrip.

Where can I buy one that's new or very close to new/rebuilt so that it's ready for my mechanic to install and it will work flawlessly?

I'd appreciate your help.

Thanks,
Mat

[Troy]

Dr Diff, Randy's Ring and Pinion, and Mancini Racing are a few.

Troy

[Chatt69chgr]

Strange Engineering may have it too.

[mopar0166]

Strange is too big for its own good anymore,  very bad experience  with them!

[John_Kunkel]

Why a 489? Got the idea that the largest stem is the strongest?

[Kern Dog]

Could be he wasnt the correct '489 for the 1970 model year.

[BSB67]

Not sure why someone choose to buy a 489

[fy469rtse]

if you do use a 489 ,
get the kit to eliminate the crush sleeve,
ok a lot more work to set pinion and such, but eliminates a known weak point , and dont buy suregrip, i nick named this sureslip
tracklock or one of the aftermarket equivilents,
take you time and ask , guys on here will pipe in on what they have used,
my self 742 original traclock , steel clutches , 

[Cooter]

Not sure why someone choose to buy a 489

maybe the same reason one pays $500.00 more for an "HP" 440??