<VV> replacing a three speed with a four speed

[corvairs]

Yes, you will need to replace the main crossmember as well as the 
differential and the input shaft - Lon

www.corvairunderground.com

CORVAIR412 at aol.com wrote:

>I have a 1961 Monza coupe with a three speed and would like to replace  the 
>drive train with a 4 speed drive train. I have the cross member which is  
>attached to the transmission case of the four speed.  Clark's helps say I  also 
>need the large cross member.  Does that mean I  will have to  replace the whole 
>rear cross member?  Point me to a resource or to any  manual which would have 
>the information.  Thanks so much
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