Andy, if you want to stop at that point for a while....
On ebay there is always a guy who's selling some AM B-25 kits for parts. I bought the B-25G conversion-set for less than $ 5.00 US. Here's the trick - those guys don't like canucks! The shipping for the part I mentioned was $19.00 US!!! I wrote something negative about the deal and the next day the same seller increased the shipping to $25.00.
I just checked the evil bay - see here. Shipping to Canada is $ 24.00 (must be the same guy as in my description, but the name is different). Shipping to U.S. - $6.99. O.K. it's not cheap, but this is the original part with the wide intake. There might be a different market place (kijiji?) selling the same part too.
O.K. - here is a plan B: Great Hobbies are selling the Academy-clone of the AM model for $42.99 CAD - check here. This kit has the 2 versions of cowlings and intakes. If you buy it, you can use both: for this project and for a later one (e.g. you can try any early B-25 modified in the MTO or SWPA we've been discussing here so much). This is actually the cheapest early B-25 in 1/48 one can buy. The Revell-clone is around $70.
These were my 2 cents.
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