j0hn is right, you will need to look towards anything after the BL1000 code cutover.
The only chance from a "wood" perspective you would have would be to look for a master/center that could be controlled with a Code Converter.
Discounting the "flat" BM3000 and "stack" 5000 (no wood), your options would be a BM6000 or 8000, or a BC7xxx.
The problem is finding a complete converter! ...and keep in mind that the 6000/8000 needs minor boardwork as well.
But hey! They are great choices! EVERYONE needs an 8000!