Disco 1 & 2 - same body?

Quick Q oh wise ones...

Im looking to fit a full length roofrack to my Disco 1, and Im seeing a lot for Disco 2s.

The roofline looks the same to me, but I gather its slightly different. Only thing that really matters I guess is the width of the gutters and the length of the legs to clear the roof. Are these two measurements about the same on the 1 & 2?

Many thanks!

d2 is longer

I can cope with that - just means I'll have a bit more rack hanging out front or back.
Just slightly concerned that the feet aint going to line up with the gutters?

Took a roof rack off a TD5 and it fitted on the 300TDi without issue and the one from the TDi went onto the TD5