I'd recommend designing a decent vented box for the 420 using the TS parameters

http://alteclansingunofficial.nlenet...ele-Small.html

There is lots of software to help.

GPA sells the little Mantaray horns dirt cheap...like $20-25 each US-then find a set of drivers...you'll wind up with better speakers...the little Mantaray is so light shipping is cheap...

http://www.greatplainsaudio.com/hf_horns.html

Poor man's option, design the box for the 420's and use the existing tweets. Make the speaker baffle board removable so you can change it later. Then you can upgrade the HF, if you ever blow a woofer recone thm as 416'-B and retune the box...

Here are the dimensions of the Santana

http://www.lansingheritage.org/image...ome/page21.jpg

It's just a box....

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