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Boss
Frog Kit information...
Differential
Subframe (Ford 8.8) this kit fits the Ford 8.8 IRS
differential center section from 89-97 Thunderbirds,
which has two vertical mounting holes on the front, and two
horizontal mounting holes on the rear. The kit utilizes four
existing mounting brackets that are stock on the NB rear subframe,
and are easily added to the NA rear subframe. The unique design
of the Boss Frog Differential Mount features a two-piece formed
mounting system that is much stronger than tubular mounts.
The lower differential mount attaches solidly to the rear
subframe in four places, and the rear differential mount attaches
to the vertical member of the rear subframe, using existing
holes for alignment. Because of this unique mounting system,
the differential can be mounted very high in the rear subframe
to maximize ground clearance.
Boss
Frog also uses a pair of differential braces that bolt between
the lower differential plate and the floor/frame, to stiffen
the rear subframe and help eliminate wheel hop. The kit also
uses urethane bushings both the front and rear of the differential,
to dampen the shock load. Stock rear sway bars, shocks and
springs can be retained. This kit can also be used to replace
the stock differential for high horsepower turbo or blown
Miatas.
The
kit includes;
- lower
differential mount assembly
- rear
differential mount assembly
- urethane
bushings (front and rear)
- differential
braces
- grade
8 hardware and installation instructions


Have
any questions about parts, kits, or products available from
Bishop are welcome. Contact the us by phone and leave a message
at 604-984-3673 or e-mail by visiting our contact page and
we will respond promptly. Our office hours are Monday to Friday
from 10:00am to 4:00pm PST. We really love to share the fun
with other performance enthusiasts who want to take their
cars to the next level of performance, appearance and handling!
Thanks for visiting!
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custom, racing and performance parts!
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