Quote:
Originally Posted by Aerocoupe
I have the MM in my Coupe and the Griggs in my T-Bird. They are two different designs but both are awesome. The MM is just about the same weight as the stock K-Member and does move the control arms forward 3/4". If you order the standard offset control arms then you have no sheet metal problems as it only moves the front wheels forward 3/4". If you order the offset control arms then it will move your wheels forward a total of 1-1/2". Neither unit will work with the stock springs and struts as the do not have the upper perch for the standard coil springs. So you have to convert over to a coil over type spring and strut setup. MM has good ones and so does Griggs. Both of my cars have the Griggs coil overs all the way around with the Koni SA's and DA's. The Griggs K-member is more meant for racing but it will stand up to mild street driving. My Coupe sees the street way more than the T-Bird so I used the MM in it.
Now for the bad news...stock controls cannot be used with the MM or the Griggs units. Straight from the MM K-member installation instructions:
Proper installation of the MM K-member will require the use of the following parts:
• Tubular front control arms.
• Caster/Camber plates.
• Front Coil-Over conversion kit.
• MMST-6 Spherical Rack Bushings.
• Adjustable Tie-Rod ends.
• MM Relocation Kit for the front Swaybar, when using the MM forward-offset control arms.
We recommend the following parts to accompany the installation of a K-member:
• Solid steering shaft
• Shorter aftermarket urethane swaybar end links
• MM Front Swaybar Bracket reinforcements (1979-1993 cars)
• MM Strut Tower Brace
• High performance struts to match your spring rate
Long story short they both require the same gear to install but the Griggs is more of a racing setup. If you have any other questions just shout as I just finished up the Coupe a couple of weeks ago.
Darren
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Thanks for all the info... How do you like the coilover setup you are currently using?