dzien dobre. I will be flying in to krakow on the 8th. I will try to answer some of your questions
1.Yes all of these engines should fit into your car. some may take more work than others but it can be done
2.The b16 and b18 are going to be the easies because they won't need as many other parts as the h22 will.
3.I have the mounts from hasport and I am very pleased. There are places on ebay that sell kits for cheaper but I do not know how they fit nor the quality of the materials. I would suggest saving up the money and getting the better quality kit.
4.I love the turque that my h22 sol has but if I had to do it over I would have gone with the b series. It adds another 50-100 pounds to the front of a front heavy car. There are also a lot of other things that are necessary to change out when you do this swap.
5.don't know a ton about suspension or brakes
6.for the b series swap you shouldn't have to get anything else. Most of the linkage and cables match up. You will need a new wire harness though unless you wanted to try to cut and rewire it yourself. You should be able to keep P/S
7.You will need a lot of other parts. '90-'93 integra axles, '90-'93 accord halfshaft, accord resistor pack, '92-'96 prelude shift linkage among other stuff. You can keep P/S but it will be difficult due to fitment issues.
Try using the search option on this forum and it will give you alot of the information you are looking for. Another option is to try
www.hondaswap.com. There is a lot of useful information on there also
do widzenia