"How to Improve Triumph TR2-TR4A" feedback?

["J.C. Hassall" <jhassall@blacksburg.net>]

I just received notice that Roger Williams' new book "How to Improve 
Triumph TR2-TR4A" is now available.  Aside from the obvious heresy of the 
title, does anyone have an opinion on the book?  I've found his "How to 
Restore Triumph TR4-TR4A" to be quite good.  On that basis I'm awfully 
tempted to buy it sight unseen.

TIA

Jim

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Jim
jhassall@blacksburg.net
Blacksburg VA
'63 TR4 in autox preparation, 90% finished, 90% to go