Jeff,
If you don't want to start from scratch and are looking to save a little money, I have mine for sale. It came off my 23' but it might suit your needs. Dimensions: 39.5 W x 44.5 L x 49 H. It is the original console from a 1978 23' that has was modified and brought back to life by the previous owner 3 years ago. $150 and its yours. Its on the south shore of MA.
Last year on the boat:
As it sits now:
Thanks,
Mike