first post here. good time to jump in. Blind Faith is my favorite.
The neck he used is from Brownie. (The '56 sunburst Strat made famous on the Layla record a year later.)
The body is from an early 60's Telecaster Custom. He had the Tele when he was with Cream, though it had a rosewood fretboard Stratocaster neck at that time. You can see pictures of him in Cream from early '68 with the Tele.
I used to own a Fender CS Mark Kendrick Masterbuilt version of this Blind Faith Tele. I should never have let that one go.
The main difference is around the neck joint - you'll have a round gap but I can't remember whether that is with a Tele neck on a Strat body or vice versa.
Of course that doesn't take it into account the various neck profiles on both Strat and Teles over the years....