Welcome aboard Sune.

Yep, the 215 is a '67-69, closed chamber head used on both the 396 and 427. You can use them, but I would suggest you do a clearance check on your valves to piston head. Especially if the pistons have any kind of dome on them. Next consideration would be fuel availability. You're likely to have a compression ratio somewhere in the 11's depending on the piston head, which is going to have a fairly high octane requirement. I don't know what you have available over there, but you need to check it out.