I want to know the best engine for a 1991 Honda Crx swap?
 

but I need to know what will allow me to keep A/C. I don't think the K20a swap allows you to keep the a/c. Does the 18 type r engine allow a/c and is there any good links to show me how to set up the a/c on the swap... I can find swap links just need an a/c link. Plus very little hood modding the k20a requires a specific hood and I like mine.

very easy do any b series swap and u will get ur ac or if not a b series then a d series vtec. i would go with a comon b16a for a crx si very easy swap