Regarding your front-end
If you're going to use the new Mopar X-ram & want it to stay under the hood, you'll need to use a 1" to 1 1/4" spacer as that manifold is larger than the originals. Your A-arms won't be much of an issue until you start using the car at racing speeds, then you'll probably need to follow the guidelines in the Guide. While bending/modifying them may be an issue where you are, another possibility is to contact "Old Car Parts" here in the States & see if you sent them a copy of what's in the Guide they could make them for you. They deal with rare/one-off pieces for collectors. Of course you could always use modern, adjustable A-arms, as I did, as no one is really going to see them anyway & most won't even know if they ARE origianl or not. As to your steering column: you should have enough room to move it forward the extra inch or so you'll need to compensate for the lowered K-member. Sometimes they do have have to be shortened & that entails disassembling it & making the appropriate modifications.