My TR4 started life in May 1964 at 2138cc.
https://www.flickr.com/photos/38640565@N03/28290888612/
Modifications include
Stage 3 cylinder head
Unleaded capability
Bigger pistons giving 2290cc
Twin 45DCOE weber carbs
Fast road cam
Uprated distributor, coil and plugs
Complete rewire including move to negative earthing and alternator conversion
Extractor manifold and straight through s/s exhaust
Narrow band conversion
Revotec electric fan
Oil cooler
Facet electric fuel pump
Filter King
Lightened flywheel
Adjustable front shockers
Uprated rear suspension (springs and lever dampers)
72 spoke wider CWW
Most powerful battery consistent with location in engine bay
Leather upholstered seats
Inertia reel seat belts
Door mirrors
A pocket rocket for which i have never had any problem re insurance and all declared.