After finishing my M7 Priest I've decided to have a go at the M3 Lee/Grant to go on the Heng Long M4 Sherman lower hull.
I started with a Tamiya 1/35 Lee and a copy of George Bradford's WWII AFV Plans (British AFv's) which has plans for the Grant.
So to start I made thin card mockup of the 1/35 model to check sizes and angles.