Google Ads Enhanced conversions x Keap Max Classic / Ultimate/ Infusionsoft

With Google ads moving toward “enhanced conversion”, google wants to collect customer data (name, email, phone, etc) from the conversion events pages. We have Keap webforms on our website, and then they go to a thank you page and the Google conversion event is recorded when someone lands on a page with “thank-you” in the URL. But since the webform is through Keap and hits a webhook before redirecting to the thank-you page, how would we pass the customer parameters such as email and phone to Google? Has anyone encountered this yet?

Currently the webforms can pass information in the URL parameters rather than posting to the page itself. Does anyone have potential solutions?