Newer cars got better synchros (think 94). NB boxes will only fit two of the three starter bolts, but doesn't seem to matter. If you get a newer one, make sure you get the shifter, too, they went to two pins on the ball on later boxes.
Bill Cardell TurboDog's Dad Flyin' Miata 1-800-359-6967 (sales) 970-464-5600 (tech support) www.flyinmiata.com www.fmwestfield.com ________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of Larry Alster Sent: Friday, June 24, 2011 4:13 AM To: 'Shaun Bogan'; [email protected] Subject: RE: Transmission question Fully interchangeable I think it's something like 94 and up are a little different but for the most part they are all the same. Larry Alster 91 Miata White Knight 92 Miata Silver Bullet 92 Miata Honey B 04 MSM MX-5 Whooosh 06 WRX STi Subie From: [email protected] [mailto:[email protected]] On Behalf Of Shaun Bogan Sent: Thursday, June 23, 2011 11:05 PM To: [email protected] Subject: Transmission question Well, my tired old 5 speed finally quit on me. 3rd gear went to bits tonight under full load. With 175k miles and a bunch of turbo / track abuse, I can't complain. My question is regarding the differences between the NA and NB 5 speed. Does anyone know if they are interchangeable and if there are reasons to prefer one over the other? Thanks! -Shaun
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