73-87 14 bolt ff swap into 97

[Chevybed]

I picked up a 14boltff yesterday i got a good deal on but its the older one out of the 73-87(91). And i was just wondering the spring perch width differences in these trucks. I am putting it under my 97 tahoe that i did a SAS on with a dana 60hp front.

 

[Chevybed]

Im not sure what it originally came out of as i took it out of a blazer and it is a SRW axel.

 

[aaronb]

Center pin to center pin on the 400's is 47". As for the older axles I'm not sure.

 

[Chevybed]

Okay thanks i should be able to work with that